<template>
  <div class="app-container">
    <h2 style="text-align: center">发布新课程</h2>
    <el-steps
      :active="3"
      process-status="wait"
      align-center
      style="margin-bottom: 40px"
    >
      <el-step title="填写课程基本信息" />
      <el-step title="创建课程大纲" />
      <el-step title="发布课程" />
    </el-steps>

    <div class="ccInfo">
      <!-- <el-tag type="text">课程背景</el-tag>  -->
      <img :src="publicCourse.cover" />
      <div class="main">
        <!-- <el-tag type="text">课程标题</el-tag> -->
        <h2>{{ publicCourse.title }}</h2>
        <p class="gray">
          <span>共{{ publicCourse.lessonNum }}课时</span>
        </p>
        <p>
          <span
            >所属分类：{{ publicCourse.subjectLevelOne }} —
            {{ publicCourse.subjectLevelTwo }}</span
          >
        </p>
        <p>课程讲师：{{ publicCourse.teacherName }}</p>
        <h3 class="red">￥{{ publicCourse.price }}</h3>
      </div>
    </div>

    <div>
      <el-button @click="previous">返回修改</el-button>

      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish"
        >发布课程</el-button
      >
      <el-button :disabled="removeCourse" type="danger" @click="publish"
        >删除课程</el-button
      >
    </div>
  </div>
</template>
<script>
import courseApi from "@/api/edu/course";
export default {
  name: "Chapter",
  data() {
    return {
      active: 3,
      saveBtnDisabled: false,
      courseId: "",
      publicCourse: {},
    };
  },
  created() {
    //获取url中的路径参数
    if (this.$route.params && this.$route.params.id) {
      this.courseId = this.$route.params.id;
      this.getPublishCourseInfo();
    }

    //获取后台传输的数据
  },
  methods: {
    //删除视频所有信息
    removeCourse() {
      this.$confirm("是否确定删除该课程所有信息?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        //函数体
        courseApi.deleteCourse(this.courseId).then((response) => {
          /**
           * 1. 删除成功
           * 2. 跳转页面
           * 3. 清空数据
           */
          this.$message({
            type: "success",
            message: "发布成功",
          });
          this.courseId = "";
          this.publicCourse = {};
          this.$router.push({ path: `/course/info` });
        });
      });
    },

    //获取publish的数据
    getPublishCourseInfo() {
      courseApi.getPublishCourseInfo(this.courseId).then((response) => {
        this.publicCourse = response.data;
        console.log(this.publicCourse);
      });
    },

    //页面跳转
    previous() {
      this.$router.push({ path: `/course/chapter/${this.courseId}` });
    },
    publish() {
      this.$confirm("是否确定最终发布?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        /**
         * 1. 请求接口
         * 2. 弹出提示框
         * 3. 跳转页面
         */
        courseApi.publishCourse(this.courseId).then((response) => {
          this.$message({
            type: "success",
            message: "发布成功",
          });

          this.$router.push({ path: `/course/list` });
        });
      });
    },
  },
};
</script>

<style scope>
.ccInfo {
  background: #f5f5f5;
  padding: 20px;
  overflow: hidden;
  border: 1px dashed #ddd;
  margin-bottom: 40px;
  position: relative;
}
.ccInfo img {
  background: #d6d6d6;
  width: 350px;
  height: 350px;
  display: block;
  float: left;
  border: none;
}
.ccInfo .main {
  margin-left: 520px;
}
.ccInfo .main h2 {
  font-size: 28px;
  margin-bottom: 30px;
  line-height: 1;
  font-weight: normal;
}
.ccInfo .main p {
  margin-bottom: 10px;
  word-wrap: break-word;
  line-height: 24px;
  max-height: 48px;
  overflow: hidden;
}
.ccInfo .main p {
  margin-bottom: 10px;
  word-wrap: break-word;
  line-height: 24px;
  max-height: 48px;
  overflow: hidden;
}
.ccInfo .main h3 {
  left: 540px;
  bottom: 20px;
  line-height: 1;
  font-size: 28px;
  color: #d32f24;
  font-weight: normal;
  position: absolute;
}
</style>